- 1(current)
Q. No.In a type of apomixis known as adventive embryony, embryos develop directly from:
1. Nucellus or integument
2. Zygote
3. Synergids of antipodals of embryo sac
4. Accessory embryo sac in the ovule
The phenomenon observed in some plants wherein parts of the sexual apparatus are used for forming embryos without fertilisation is called
| 1. | Parthenocarpy | 2. | Apomixis |
| 3. | Vegetative propagation | 4. | Sexual reproduction |
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Scientists around the world are trying to transfer apomictic genes into hybrid varieties primarily because:
| 1. | cultivation of hybrids has tremendously increased productivity in many important crops. |
| 2. | hybrids are seedless varieties and therefore propagation becomes very difficult. |
| 3. | if seeds from the hybrids are sown, segregation leads to the loss of hybrid characters. |
| 4. | apomixis eliminates the use of seeds in the propagation of plants. |
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I. is a type of apomixis
II. produces embryos that are genetically identical to the parent plant
1. Both I and II are correct
2. Only I is correct
3. Only II is correct
4. Both I and II are incorrect
- 1(current)
Q. No.
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